Usage Terms

The information on this website is provided in good faith as an accurate indication of information about astronomical bodies derived from a variety of sources, but is not usually a primary source of such information. While the Society for Popular Astronomy (SPA) makes every effort to ensure that the information is correct, no warranty is given about its accuracy, so before making use of the information you should confirm it with a primary source.

For example, if you are planning to base an observing trip according to information contained within this site, you should verify the details using a primary source of such information, such as Her Majesty’s Nautical Almanac Office.